PINPOINT TEST E: THE PULSE VACUUM HUBLOCKS DO NOT OPERATE PROPERLY (TRANSFER CASE MOTOR MOVEMENT AND FRONT DRIVE SHAFT OPERATE
PROPERLY
Is the resistance less than 5 ohms?
Yes
REFER to
Section 418-00
.
No
REPAIR circuit 519 (LG/BK) or 57 (BK). CLEAR the DTCs. TEST the system for normal operation.
CONDITIONS
DETAILS/RESULTS/ACTIONS
E1
LEAK TEST THE WHEEL ENDS AND LOWER VACUUM SYSTEM — SOLENOID OUTPUT
Raise and support the vehicle; refer to
Section 100-02
.
PVH Solenoid Vacuum Connector
NOTE:
This step may require rapid pumping for up to 10 seconds.
Connect a hand vacuum pump to the PVH solenoid upper port hose connector and try to pull a vacuum to 15
in/Hg.
Does the vacuum drop exceed 0.5 in/Hg in 30 seconds?
Yes
GO to
E22
.
No
GO to
E2
.
E2
LEAK TEST THE UPPER VACUUM SYSTEM — SOLENOID INPUT
Connect a hand vacuum pump to the PVH solenoid lower port hose connector and try to pull a vacuum to 15
in/Hg.
Does the vacuum drop exceed 0.5 in/Hg in 30 seconds?
Yes
GO to
E3
.
No
GO to
E5
.
E3
LEAK TEST THE A/C SYSTEM
Page 49 of 62
2000 Ranger Workshop Manual
1/18/2012
http://www.fordtechservice.dealerconnection.com/pubs/content/~WSYL/~MUS~LEN/21/...